Wave Interactions

Example 1 A wave of amplitude of 0.30m interferes with a second wave of amplitude 0.20m. What is the largest resultant displacement that may occur?

Example 2 A string is rigidly attached to a post at one end. A series of pulses of amplitude of 0.15 m sent down the string are reflected at the post and travel back down the string without a loss of amplitude. What is the amplitude at a point on the string where two pulses cross? What type of interference is that?

Example 3 How would your answer change if the same pulses were sent down a string whose end is free? What type of interference is this?

Example 4 How would your answer change if the same pulses were sent down a string whose end is free? What type of interference is this?

Example 5 A stretched string fixed at both ends is 2.0 m long. What are three wavelengths that will produce standing waves on this string. Name at least one wavelength that would not produce a standing wave pattern, and explain.